XX灌区规划开发的设计方案第1章 灌区规划开发概况以及必要性与可行性分析第2章 作物灌溉制度和灌水率图设计1. 灌溉设计标准灌溉设计保证率采用85%,经频率计算分析,相应的设计代表年为1971年2. 逐日耗水量计算表表2.1 水稻耗水量计算表Table 2.1 The water consumption calculation table of paddy生育期返青分蘖孕穗抽穗乳熟黄熟全生育期起止日期早稻25/4-4/55/5-1/62/6-16/617/6-26/627/6-6/77/7-14/725/4-14/7晚稻3/8-10/811/8-2/93/9-22/923/9-2/103/10-13/1014/10-23/103/8-23/10天数早稻1028151010881晚稻8232010111082需水模比系数<%>早稻7242422149100晚稻626272597100田间渗漏量早稻1.51.51.51.51.51.51.5晚稻1.51.51.51.51.51.51.5水面蒸发量E0早稻32.6102.848.431.158.437310.3晚稻56.1158.358.828.42821.7351.3阶段需水系数α早稻0.000.000.000.000.000.001.2晚稻0.180.520.190.090.090.071.15阶段需水量早稻26.0789.3789.3781.9252.1333.51372.36晚稻24.24105.04109.0810136.3628.28404阶段渗漏量早稻154222.5151512121.5晚稻1234.5301516.515123阶段耗水量早稻41.07 131.37 111.87 96.92 67.13 45.51 493.86 晚稻36.24 139.54 139.08 116.00 52.86 43.28 527.00 逐日耗水量早稻4.114.697.469.696.715.696.10晚稻4.536.076.9511.604.814.336.433. 早稻生育期灌溉制度计算表表2.2 早稻生育期灌溉制度计算表Table2.2 The calculation table of irrigation scheme of early rice during the growth period早稻全生育期田间水层变化 H末=H始+P+I-WC-D H始=20mm 日期生育期田间适宜水层深逐日耗水量逐日降雨量田间水层变化〔mm>灌水量排水量月日42420.0 续表2.2 早稻生育期灌溉制度计算表 Continued Table2.2 The calculation table of irrigation scheme of early rice during the growth period日期生育期田间适宜水层深逐日耗水量逐日降雨量田间水层变化〔mm>灌水量排水量月日25262728返青期10-30-504.121.40.20.317.3 13.4 29.625.520 2921.4 3017.3 510.613.8 223.733.4 329.3 425.2 5分蘖10-40-604.711.522.0 617.3 712.6 833.441.3 936.6 1031.9 1127.2 1222.5 1317.8 1413.1 150.839.2 30167.942.4 171552.7 186.354.3 1949.6 2044.9 2140.2 2235.5 2340.36011.12455.3256.156.7264.456.4272816.8608.555.329050.630-4.731-9.461-14.1续表2.2 早稻生育期灌溉制度计算表Continued Table2.2 The calculation table of irrigation scheme of early rice during the growth period日期生育期田间适宜水层深逐日耗水量逐日降雨量田间水层变化〔mm>灌水量排水量月日234567孕穗20-50-807.520.234.43.438.430.943.675.2 70.563.460`80.258.9951.61044.11136.6126.229.11327.81420.31542.8301635.317抽穗20-50-809.748.1301838.41956804.702057.18047.4210.270.5221.562.32352.62442.92533.2261.625.127乳熟10-40-606.718.42811.72935.0303028.37121.623.918.8312.1435.430528.7622.07黄熟0-305.737.93024.2826.83021.196.9301.2续表2.2 早稻生育期灌溉制度计算表Continued Table2.2 The calculation table of irrigation scheme of early rice during the growth period日期生育期田间适宜水层深逐日耗水量逐日降雨量田间水层变化〔mm>灌水量排水量月日1024.31118.61212.8137.1141.4合计〔不含黄熟期449.1343.4230122.25校核：H始+P+I-WC-D=H末20+343.4+230-449.1-122.25=22.0mm与7月6日田间水层深度符合4. 早稻生育期设计灌溉制度表表2.3 早稻生育期设计灌溉制度表Table 2.3 Design irrigation scheme of early rice during growth period灌水次数灌水日期灌水定额mmM3/亩14.272013.325.15302036.2604046.14302056.18302066.29302077.43020合计230153.3 选择泡田定额为90 M3/亩,则早稻全生育期灌溉定额为90+153.3=243.3 M3/亩5. 晚稻生育期灌溉制度计算表表2.4 晚稻生育期灌溉制度计算表Table 2.4 The calculation table of irrigation scheme of late rice during the growth period日期生育期田间适宜水层深逐日耗水量逐日降雨量田间水层变化灌水量排水量月日82203返青期10-30-504.5315.47410.94526.4120621.88续表2.4 晚稻生育期灌溉制度计算表Continued Table 2.4 The calculation table of irrigation scheme of late rice during the growth period日期生育期田间适宜水层深逐日耗水量逐日降雨量田间水层变化灌水量排水量月日7返青期10-30-504.50.718.0580.514.02929.49201024.9611分蘖10-30-606.118.891212.82130.627.35201421.28。